Thornton, Iowa Weather
Toward the solstice glow. Day 88 of spring. Read this microseason across nine climate regions →
Thornton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——75°49°—
- TuesdayJun 16Light Drizzle—0.02″71°53°-4°
- WednesdayJun 17Showers86%0.26″79°54°+8°
- ThursdayJun 18Light Rain—0.10″69°48°-10°
- FridayJun 19Overcast——75°47°+6°
- SaturdayJun 20Light Drizzle20%0.04″73°60°-2°
- SundayJun 21Overcast30%—73°58°0°
AQI 30 (Good), driven by PM2.5. AQI down 5 over the last 6 hours (gradual decline).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:34 AM
- Moonset
- 9:14 PM
- In sign
- ♊︎ Gemini
Toward the solstice glow
Thornton at a glance
- Today vs. normal: 22°F below the seasonal normal for this latitude
- Last frost: May 4 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Thornton
- Mon75°49°3%
- Tue71°53°8%
- Wed79°54°86%
- Thu69°48°6%
- Fri75°47°7%
- Sat73°60°20%
- Sun73°58°30%
- Mon71°55°27%
- Tue72°60°13%
- Wed79°61°18%
- Thu85°68°15%
- Fri88°70°25%
- Sat91°75°29%
- Sun92°67°32%
- Mon81°64°39%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Thornton
SPC has placed Thornton in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Thornton
- 50479